<template>
    <div>
        <div style="width: 600px; background: #fff; margin: 50px auto; padding: 30px 60px;">
            <h1 style="text-align: center; margin: 20px 0">管理员登录</h1>
            <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="ruleForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="ruleForm.password"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="submitForm('ruleForm')">登录</el-button>
                    <el-button @click="resetForm('ruleForm')">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
    export default {
        data() {
            return {
                ruleForm: {
                    username: 'root',
                    password: '123456'
                },
                rules: {
                    username: [
                        { required: true, message: '请输入用户名', trigger: 'blur' },
                        { min: 4, max: 15, message: '长度在 4 到 15 个字符', trigger: 'blur' }
                    ],
                    password: [
                        { required: true, message: '请输入密码', trigger: 'blur' },
                        { min: 4, max: 15, message: '长度在 4 到 15 个字符', trigger: 'blur' }
                    ]
                }
            };
        },
        methods: {
            submitForm(formName) {
                this.$refs[formName].validate((valid) => {
                    if (valid) {
                        let url = 'http://localhost:9081/admins/login';
                        console.log('url = ' + url);
                        // console.log('请求参数：' + this.ruleForm);
                        // console.log(this.ruleForm);
                        let formData = this.qs.stringify(this.ruleForm);
                        //this.axios.post(url, this.ruleForm).then((response) => {
                        this.axios.post(url, formData).then((response) => {
                            // console.log(response);
                            let responseBody = response.data;
                            if (responseBody.state == 20000) {
                                // console.log('登录成功！');
                                this.$message({
                                    message: '登录成功！',
                                    type: 'success'
                                });
                                // 获取服务器端响应的JWT，并存储到LocalStorage
                                let jwt = responseBody.data;
                                console.log('登录成功，服务器响应的JWT=' + jwt);
                                localStorage.setItem('jwt', jwt);
                                // 以下是测试
                                // let localJwt = localStorage.getItem('jwt');
                                // console.log('从LocalStorage中读取JWT：' + localJwt);
                            // } else if (response.data == 2) {
                            //     // console.log('登录失败，用户名错误！');
                            //     this.$message.error('登录失败，用户名错误！');
                            } else {
                                // console.log('登录失败，密码错误！');
                                // this.$message.error('登录失败，密码错误！');
                                this.$message.error(responseBody.message);
                            }
                        });
                    } else {
                        console.log('error submit!!');
                        return false;
                    }
                });
            },
            resetForm(formName) {
                this.$refs[formName].resetFields();
            }
        }
    }
</script>

<style>
    body {
        background: #12487d;
    }
</style>